Genus: Archaeogracilidens VILLALOBOS-SEGURA, AMADORI, STUMPF, JAMBURA, BEGAT, LOPZ-ROMERO, SCHWEIGER, MAXWELL & KRIWET, 2025
Etymlogy: Greek, archaeo, "ancient, antique", and a combination of Latin, gracilis, "slender' in allusion to the very slencer crowns in anterior teeth, and Latin, dentis, which is the genative singular of 'dens' (m.), "tooth", in allusion to the high number os species based on teeth alonge.
Species: macer (QUENSTEDT, 1851) VILLALOBOS-SEGURA, AMADORI, STUMPF, JAMBURA, BEGAT, LOPZ-ROMERO, SCHWEIGER, MAXWELL & KRIWET, 2025
Etymology:
= Oxyrhina macer QUENSTEDT, 1851
= Sphenodus macer (QUENSTEDT, 1851) QUENSTEDT, 1858
Lectotype: GPIT 1205/15
Locality: Schnaitheim Heidenheim a.d. Benz, , Baden-Wurttemberg, Southern Germany.
Horizon: Brenztaltrümmerkalkd subformation (Brenztal-Trümmerkalk).
Biostratigraphy: beckeri zone, ulmense subzone.
Age: Late Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Materal: Tooth.
Referred material:
BOTTCHER & DUFFIN, 2000
Locality: Reichenbach, Germany.
Horizon:
Biostratigraphy: Transversarium zone.
Age: Middle Oxfordshire Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 50967/2: Tooth.
Locality: Bollat near Balingen, Germany.
Horizon:
Biostratigraphy:
Age: Middle Oxfordshire Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 80465: Teeth.
Locality: Hornle near Balingen, Balingen, Germany.
Horizon:
Biostratigraphy:
Age: Middle Oxfordshire Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 50335: Teeth.
Locality: Tieringen, Balingen, Germany.
Horizon:
Biostratigraphy:
Age: Middle Oxfordshire Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 54711: Teeth.
Locality: Salmendingen, Germany.
Horizon:
Biostratigraphy:
Age: Middle Oxfordshire Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 80464/1: Teeth.
Locality: Egesheim, Quarry on Westerberg, Baden-Württemberg, Germany.
Horizon: Nusplingen Plattenkalk, Pk 3, 80 cm form the top of the bed.
Biostratigraphy: Beckeri zone, ulmense subzone.
Age: Late Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 80142/44: Nearly complete specimen.
VILLALOBOS-SEGURA, AMADORI, STUMPF, JAMBURA, BEGAT, LOPEZ-ROMERO, SCHWEIGERT, MAXWELL & KRIWET, 2025
Locality: Nusplingen, Baden-Württemberg State, Germany.
Horizon:
Biostratigraphy: Beckeri zone, ulmense subzone.
Age: Late Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 96844/7: Nearly complete female.
Locality: Near the village of Houlgate and Villers-sur-Mer, Normandy, France.
Horizon:
Biostratigraphy:
Age: Oxfordian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 86244: Isolated tooth.
Locality: Unknown, Solnhofen Archipelago, Baden-Württemberg State, Germany.
Horizon: Altmühltal Formation.
Biostratigraphy:
Age: Early Tithonian Stage, Malm Epoch, Late Jurassic.
Material:
MCZ 1444896: Fragmetary and disaticulated skeleton.
= Orthacodus longidens WOODWARD, 1889 (referred material)
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
Number: Not given:
= Sphenodus (Orthacodus) longidens EASTMAN, 1895
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
Number: Not given:
= Ornthacodus nitidus De BEAUMONT, 1960 (referred material)
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
Number: Not given:
= Sphenodus nitidus WAGNER 1862
Etymology:
= Oxyrhina macer FRAAS, 1854 (referred material).
= Oxyrhina longidens FRAAS, 1855 (referred material).
= Oxyrhina macer QUENSTEDT, 1858 (referred material).
= Orthacodus (Sphenodus) nitidus (WAGNER, 1862) OSSWALD, 1929
= Orthacodus nitidus De BEAUMONT, 1960 (referred material).
= Sphenodus macer SCHWEIZER, 1964 (referred material).Holotype: BSPGM na. AS VII 647
Locality: Solnhofen, Baveria, Southern Germany.
Horizon: Solnhofen Plattenkalk.
Biostratigraphy: Hybonotoum zone, Rueppellianus subzone.
Age: Early Tithonian Stage, Malm Epoch, Late Jurassic.
Material: A partial skeleton.
Referred material:
Locality: Stuifen near Waldstetten, Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy: Malm alpha (more probably beta), Planula zone.
Age: Late Oxfordian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 80455/1:
Locality: Unter-Digisheim, Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy: Malm alpha.
Age: Early Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 52101/1:
Locality: Bossler, 11 km SE of Kirchheim unter Teck, Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy: mutabilis zone.
Age: Early Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 50365:
Locality: Friedingen, Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy: ulmense subzone.
Age: Late Kimmeridgian Stage, Malm Epoch, Late Jurassic.
Material:
SMNS 51891:
Locality: Egesheim, Baden-Wurttemberg, Germany.
Horizon:
Biostratigraphy:
Age: Late Jurassic.
Material:
SMNS 80142/1-10, 12, 44, 80143/1-5, 80430/4-5:
Locality: Nusplingen, Westerberg, Baden-Wurttemberg State, Germany.
Horizon:
Biostratigraphy:
Age: Late Jurassic.
Material:
SMNS 80144/4-20, 80431/28-43, 80440/1-6, 13, 36, 38, 89, 86214/2-3, 10-13:
BOTTCHER, 2024
Locality: Egesheim, Baden-Württemberg State, Germany.
Horizon: Nusplingen Formation.
Biostratigraphy:
Age: Kimmeridgian Stage, Middle Malm Epoch, Middle Late Jurassic.
Material:
SMNS 80430/14: Rooth with base of crown.
KRIWET & KLUG, 2013
Locality: Solnhofen, Baveria State, Germany.
Horizon:
Biostratigraphy:
Age: Late Jurassic.
Material:
SNSB-SPG AS VII 647: Fragmentary specimen.
= Sphenodus lundreni (DAVIS, 1890)
Etymology:Holotype:
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
Referred material:
BOLES, ULLMANN, PUTNAM, FORD & DECKHUT, 2024
Locality: Edelman Fossil Park, Mantua Township, Gloucester Country, New Jersey.
Horizon: Navesink Formation, Hornerstown Formation.
Biostratigraphy:
Age; Maastrichtian Stage (Navesink), Senonian Subepoch, Gulf Epoch, Late Cretaceous. Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous-Danian Stage (Lower Hornerstown Formation), Danian Stage, Early Paleocene Epoch, Early Paleogene Period, Tertiary Sub-era, Early Cenozoic Era.
Material:
RU-EFP-02913: Tooth (MFL).
RU-EFP-04159: Tooth (Collected as float).
= Sphenodus cf. lundgreni KANNO, TOKUMARU, NAKAGAKI, NAKAJIMA, MISAKI, HIKIDA & SATO, 2022
Locality: Abeshiani Locality, approximately 10 km south of the river mouth at the Teshio River and about 1 km upstream from the point were the tributary Wakkawenbetsu River flows, 44°38'26.5"N, 142°03'40.1"E, Nakagawa Town, Hokkaido Island, Japan.
Horizon: Nishichirashini Formation, Middle Yeso Group.
Biostratigraphy:
Age: Coniasian-early Santonian Stage, Early Senonian Subepoch, Early Gulf Epoch, Early Late Cretaceous.
Material:
NMV 130, 131: Teeth.
= Sphenodus helveticus De BEAUMONT, 1960
Etymology:Holotype:
Locality:
Horizon:
Biostratigraphy:
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Referred material:
= Sphenodus cf. helveticus JASELLI & DUFFIN, 2021
Locality: San Bernardo Outcrop, near the last turn of the SP172 road on the run up to the village of Roncola San Bernardo (750 meters away), on teh left ide of Valle Imagna, Bergamo Province, Lombardy.
Horizon: Sedrina Limestone.
Biostratigraphy:
Age: Upper Hettangian Stage, Earliest Lias Epoch, Earliest Early Jurassic.
Material:
MSNVI 044-076: A block of light grey bioclastic calcarenite withy three isolated central cusps.